At least four people died and more than 500 were injured in a powerful explosion that struck a commercial port in Iran’s southern Hormozgan Province on the Strait of Hormuz Saturday, Iranian state television reported.

The blast, which was felt in nearby cities, was triggered by an explosion of several cargo containers at the Shahid Rajaee port in the city of Bandar Abbas, a local official told the broadcaster. People were evacuated from the site and operations at the port were suspended, the TV channel said.